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Shaders: add BufferStruct to support bool and enums (#3109)

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* node-macro: modernize `node` macro

* node-macro: add `CrateIdent` struct containing resolved crate paths

* shaders: add trait `BufferStruct` and derive macro

* shaders: `gamma_correction` and `channel_mixer` gpu nodes

* shaders: `selective_color` gpu node

* shaders: `brightness_contrast_classic` gpu node

* shaders: append GPU to display name

* node-macro: fixup doc links

* shaders: consistently append " GPU" to all shader node names
This commit is contained in:
Firestar99
2025-09-05 18:32:41 +02:00
committed by GitHub
parent acd7ba38cc
commit f12b4da549
22 changed files with 788 additions and 118 deletions
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14
node-graph/node-macro/src/lib.rs
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@@ -1,8 +1,11 @@
use crate::crate_ident::CrateIdent;
use proc_macro::TokenStream;
use proc_macro_error2::proc_macro_error;
use syn::GenericParam;
mod buffer_struct;
mod codegen;
mod crate_ident;
mod derive_choice_type;
mod parsing;
mod shader_nodes;
@@ -13,7 +16,7 @@ mod validation;
#[proc_macro_attribute]
pub fn node(attr: TokenStream, item: TokenStream) -> TokenStream {
// Performs the `node_impl` macro's functionality of attaching an `impl Node for TheGivenStruct` block to the node struct
parsing::new_node_fn(attr.into(), item.into()).into()
parsing::new_node_fn(attr.into(), item.into()).unwrap_or_else(|err| err.to_compile_error()).into()
}
/// Generate meta-information for an enum.
@@ -27,5 +30,12 @@ pub fn node(attr: TokenStream, item: TokenStream) -> TokenStream {
/// Doc comments on a variant become tooltip text.
#[proc_macro_derive(ChoiceType, attributes(widget, menu_separator, label, icon))]
pub fn derive_choice_type(input_item: TokenStream) -> TokenStream {
TokenStream::from(derive_choice_type::derive_choice_type_impl(input_item.into()).unwrap_or_else(|err| err.to_compile_error()))
derive_choice_type::derive_choice_type_impl(input_item.into()).unwrap_or_else(|err| err.to_compile_error()).into()
}
/// Derive a struct to implement `ShaderStruct`, see that for docs.
#[proc_macro_derive(BufferStruct)]
pub fn derive_buffer_struct(input_item: TokenStream) -> TokenStream {
let crate_ident = CrateIdent::default();
TokenStream::from(buffer_struct::derive_buffer_struct(&crate_ident, input_item.into()).unwrap_or_else(|err| err.to_compile_error()))
}